US 12,271,123 B2
Image forming apparatus
Ryo Yamada, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
Filed on Mar. 7, 2024, as Appl. No. 18/598,367.
Claims priority of application No. 2023-040522 (JP), filed on Mar. 15, 2023.
Prior Publication US 2024/0310755 A1, Sep. 19, 2024
Int. Cl. G03G 15/00 (2006.01); G03G 9/107 (2006.01); G03G 15/08 (2006.01)
CPC G03G 15/0889 (2013.01) [G03G 9/107 (2013.01); G03G 15/0865 (2013.01); G03G 15/5004 (2013.01); G03G 2215/00776 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image carrying member in which a photosensitive layer is formed on a surface;
a charging device that charges the surface of the image carrying member;
an exposure device that exposes the surface of the image carrying member charged by the charging device to form an electrostatic latent image with charging attenuated;
a development device that includes
a development container which stores a developer including a toner and
a developer carrying member which is arranged in the development container and supplies, to the image carrying member, the toner in the developer stored in the development container, and
develops the electrostatic latent image into a toner image;
a development voltage power supply that applies, to the developer carrying member, a development voltage with an alternating voltage superimposed on a direct voltage;
a humidity detection device that detects an absolute humidity around the development device; and
a controller that controls drive of the development voltage power supply,
wherein the controller stepwise increases a frequency of the alternating voltage as the absolute humidity detected by the humidity detection device is increased.